20 БАЛЛОВ

[tex] \frac{1}{ \sqrt{5}+ \sqrt{2} } + \frac{1}{ \sqrt{5}- \sqrt{2} } [/tex]
[tex] \frac{ \sqrt{2} }{2- \sqrt{2} }+ \frac{ \sqrt{2} }{2+ \sqrt{2} } [/tex]
[tex] \frac{2}{ \sqrt{2}+1 } - \frac{2}{ \sqrt{2}-1 } + \frac{3}{2 \sqrt{2} } [/tex]
[tex] \frac{3}{ \sqrt{3}+1 } - \frac{2}{1- \sqrt{3} } + \frac{3}{3 \sqrt{3} } [/tex]